Stainless Steel AL-6XN(tm) is stocked by 9 North American distributors and produced by 13 large mills. Distributors will offer small quantity buys while mills will generally only sell large quantities, with delivery times anywhere from 10 to 50 weeks depending on size and form required
This material is stocked primarily in Tubular Products by 4 distributors but is also available to a lesser extent in Bar Products, Piping Components, Flat Rolled Products, Forging Products, and Wire Products.
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Specifications
The following specifications cover Stainless Steel AL-6XN(tm)
- ASTM B462
- ASTM B472
- ASTM B564
- ASTM B675
- ASTM B676
- ASTM B688
- ASTM B690
- ASTM B691
- ASTM B804
- UNS N08367
Property Results
Chemistry Data : [top]
Carbon
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0.03 max |
Chromium
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20 - 22 |
Copper
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0.75 max |
Iron
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Balance |
Manganese
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2 max |
Molybdenum
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6 - 7 |
Nickel
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23.5 - 25.5 |
Nitrogen
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0.18 - 0.25 |
Phosphorus
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0.04 max |
Silicon
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1 max |
Sulphur
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0.03 max |
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Principal Design Features
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Known as a "super austenitic" stainless, this alloy combines high strength and good fabricability with excellent corrosion and pitting resistance to a wide variety of media.
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Applications
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Generally employed in applications where good strength is required in environments where chloride pitting and stress corrosion cracking is a problem. Currently used in nuts, bolts and other fasteners, tube and pipe systems for pulp and paper, distillation and other industrial equipment.
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Machinability
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Due to its high strength and alloy content, this alloy can pose some difficulty in machining. While all common methods may be employed, it should be known that machining will produce long, stringy chips which must be broken to prevent fouling. Speeds and feeds are not unlike some of the tougher austenitic stainless steels such as 316 and 317 .
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Forming
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This material can be formed using all common methods, however due to its elevated strength, higher forces will be require to deform it. Tubes can be bent to a minimum radius slightly less than 1.5 times the tube diameter. Material should be either stress or fully annealed after forming to reattain maximum corrosion and mechanical properties.
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Welding
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All methods except oxyacetylene welding have been successfully used with this alloy. While a filler metal of type 316 stainless may be sufficient for some applications, it is preferable to employ a higher alloy such as 625, or C-276 for maximum performance.
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Forging
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Soak material at 2200-2250 F(1204-1232 C), finish by reheating to 2050-2150 F(1120-1180 C) and cooling quickly to room temperature.
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Cold Working
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This material work hardens rapidly and requires regular stress relief annealings to successfully be formed.
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Annealing
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Soak material thoroughly at 2050-2150 F(1120-1180 C) followed by water quench. Slow cooling will cause the formation of harmful second phases.
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Hardening
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This alloy does not respond to hardening by heat treatment.
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Physical Data : [top]
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Density (lb / cu. in.)
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0.29
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Specific Gravity
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8.06
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Specific Heat (Btu/lb/Deg F - [32-212 Deg F])
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0.11
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Magnetic Permeability
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1.01
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Modulus of Elasticity Tension
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27
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Mechanical Data : [top]
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MSO currently has no data available for this grade.
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Videos :
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MSO currently has no videos available for this grade.
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Disclaimer
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This publication may include technical inaccuracies or typographical errors. Changes may be periodically made to the information herein.
